Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2021

Commitments And Contingencies Disclosure [Abstract]

Nuclear Insurance

The current levels of nuclear property insurance coverage for the Companies’ nuclear units are as follows:

	Coverage
(billions)
Dominion Energy
Millstone	$	1.06
Kewaunee		0.05
Summer		2.75
Virginia Power
Surry	$	1.06
North Anna		1.06

Long-term Purchase Commitment

At December 31, 2021, Dominion Energy had the following long-term commitments that are noncancelable or are cancelable only under certain conditions, and that a third party has used to secure financing for the facility that will provide the contracted goods or services:

	2022		2023		2024		2025		2026		Thereafter		Total
(millions)
Purchased electric capacity(1)	$	66	$	66	$	66	$	65	$	68	$	681	$	1,012

(1) Commitments represent estimated amounts payable for energy under power purchase contracts with qualifying facilities which expire at various dates through 2046. Energy payments are generally based on fixed dollar amounts per month and totaled $59 million and $52 million for the years ended December 31, 2021 and 2020, respectively.

Schedule of Subsidiary Guarantees

At December 31, 2021, Dominion Energy had issued the following subsidiary guarantees:

	Maximum Exposure
(millions)
Commodity transactions(1)	$	2,077
Nuclear obligations(2)		243
Solar(3)		321
Other(4)		1,282
Total(5)	$	3,923

(1) Guarantees related to commodity commitments of certain subsidiaries. These guarantees were provided to counterparties in order to facilitate physical and financial transaction related commodities and services.

(2) Guarantees primarily related to certain DGI subsidiaries regarding all aspects of running a nuclear facility.

(3) Includes guarantees to facilitate the development of solar projects. Also includes guarantees entered into by DGI on behalf of certain subsidiaries to facilitate the acquisition and development of solar projects.

(4) Guarantees related to other miscellaneous contractual obligations such as leases, environmental obligations, construction projects and insurance programs. Also includes guarantees entered into by Dominion Energy RNG Holdings, II, Inc. on behalf of a subsidiary to facilitate construction of renewable natural gas facilities. Due to the uncertainty of workers’ compensation claims, the parental guarantee has no stated limit.

(5) Excludes Dominion Energy’s guarantees for the new corporate office property and an offshore wind installation vessel discussed in Note 15.